Version 0.1.2 from FTP

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@27 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 1070 insertions, 0 deletions

diff --git a/wcfxsusb.c b/wcfxsusb.c
new file mode 100755
index 0000000..8dc66ff
--- /dev/null
+++ b/wcfxsusb.c
@@ -0,0 +1,1070 @@
+/*
+ * Wildcard S100U USB FXS Interface Zapata Telephony Driver
+ *
+ * Written by Mark Spencer <markster@linux-support.net>
+ *            Matthew Fredrickson <creslin@linux-support.net>
+ *
+ * Copyright (C) 2001, Linux Support Services, Inc.
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ */
+
+/* Save power at the expense of not always being able to transmit on hook.  If
+   this is set, we only transit on hook for some time after a ring 
+   (POWERSAVE_TIMEOUT) */
+
+#define PROSLIC_POWERSAVE
+#define POWERSAVE_TIME 4000
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/errno.h>
+#ifdef STANDALONE_ZAPATA
+#include "zaptel.h"
+#else
+#include <linux/zaptel.h>
+#endif
+#include "wcfxsusb.h"
+#include "proslic.h"
+
+#ifdef DEBUG_WILDCARD
+#define DPRINTK(x) printk x
+#else
+#define DPRINTK(x)
+#endif
+
+// Function prototypes
+static int readProSlicDirectReg(struct usb_device *dev, unsigned char address, unsigned char* data);
+static int initializeIndirectRegisters(struct usb_device *dev);
+static int verifyIndirectRegisters(struct usb_device *dev);
+static int writeProSlicDirectReg(struct usb_device *dev, unsigned char address, unsigned char data);
+static int writeProSlicInDirectReg(struct usb_device *dev, unsigned char address, unsigned short data);
+static int readProSlicInDirectReg(struct usb_device *dev, unsigned char address, unsigned short *data);
+static int writeProSlicInDirectReg(struct usb_device *dev, unsigned char address, unsigned short data);
+
+static alpha  indirect_regs[] =
+{
+{0,"DTMF_ROW_0_PEAK",0x55C2},
+{1,"DTMF_ROW_1_PEAK",0x51E6},
+{2,"DTMF_ROW2_PEAK",0x4B85},
+{3,"DTMF_ROW3_PEAK",0x4937},
+{4,"DTMF_COL1_PEAK",0x3333},
+{5,"DTMF_FWD_TWIST",0x0202},
+{6,"DTMF_RVS_TWIST",0x0202},
+{7,"DTMF_ROW_RATIO_TRES",0x0198},
+{8,"DTMF_COL_RATIO_TRES",0x0198},
+{9,"DTMF_ROW_2ND_ARM",0x0611},
+{10,"DTMF_COL_2ND_ARM",0x0202},
+{11,"DTMF_PWR_MIN_TRES",0x00E5},
+{12,"DTMF_OT_LIM_TRES",0x0A1C},
+{13,"OSC1_COEF",0x6D40},
+{14,"OSC1X",0x0470},
+{15,"OSC1Y",0x0000},
+{16,"OSC2_COEF",0x4A80},
+{17,"OSC2X",0x0830},
+{18,"OSC2Y",0x0000},
+{19,"RING_V_OFF",0x0000},
+{20,"RING_OSC",0x7EF0},
+{21,"RING_X",0x0160},
+{22,"RING_Y",0x0000},
+{23,"PULSE_ENVEL",0x2000},
+{24,"PULSE_X",0x2000},
+{25,"PULSE_Y",0x0000},
+//{26,"RECV_DIGITAL_GAIN",0x4000},	// playback volume set lower
+{26,"RECV_DIGITAL_GAIN",0x2000},	// playback volume set lower
+{27,"XMIT_DIGITAL_GAIN",0x4000},
+{28,"LOOP_CLOSE_TRES",0x1000},
+{29,"RING_TRIP_TRES",0x3600},
+{30,"COMMON_MIN_TRES",0x1000},
+{31,"COMMON_MAX_TRES",0x0200},
+{32,"PWR_ALARM_Q1Q2",0x0550},
+{33,"PWR_ALARM_Q3Q4",0x2600},
+{34,"PWR_ALARM_Q5Q6",0x1B80},
+{35,"LOOP_CLOSURE_FILTER",0x8000},
+{36,"RING_TRIP_FILTER",0x0320},
+{37,"TERM_LP_POLE_Q1Q2",0x0100},
+{38,"TERM_LP_POLE_Q3Q4",0x0100},
+{39,"TERM_LP_POLE_Q5Q6",0x0010},
+{40,"CM_BIAS_RINGING",0x0C00},
+{41,"DCDC_MIN_V",0x0C00},
+{42,"DCDC_XTRA",0x1000},
+};
+
+#define WCUSB_SPORT0				0x26
+#define WCUSB_SPORT1				0x27
+#define WCUSB_SPORT2				0x28
+#define WCUSB_SPORT_CTRL		0x29
+
+#define CONTROL_TIMEOUT_MS		(500)		/* msec */
+#define CONTROL_TIMEOUT_JIFFIES ((CONTROL_TIMEOUT_MS * HZ) / 1000)
+
+#define REQUEST_NORMAL 4
+
+#define FLAG_RUNNING	(1 << 0)
+
+static int debug = 0;
+
+struct stinky_urb {
+	urb_t urb;
+	iso_packet_descriptor_t isoframe[1];
+};
+
+typedef enum {
+	STATE_WCREAD_WRITEREG,
+	STATE_WCREAD_READRES,
+	STATE_WCWRITE_WRITEREG,
+	STATE_WCWRITE_WRITERES,
+} control_state_t;
+
+struct wc_usb_pvt {
+	struct usb_device *dev;
+	unsigned int readpipe;
+	unsigned int writepipe;
+	int usecount;
+	int dead;
+	int hardwareflags;
+	struct zt_span span;
+	struct zt_chan chan;
+	struct stinky_urb dataread[2];
+	struct stinky_urb datawrite[2];
+	urb_t 		control;
+	devrequest	dr;
+	control_state_t controlstate;
+	int urbcount;
+	int flags;
+	int timer;
+	int lowpowertimer;
+	int idletxhookstate;
+	int hookstate;
+	__u8 newtxhook;
+	__u8 txhook;
+	int pos;
+	unsigned char auxstatus;
+	unsigned char wcregindex;
+	unsigned char wcregbuf[4];
+	unsigned char wcregval;
+	short writechunk[ZT_MAX_CHUNKSIZE * 2];
+	short readchunk[ZT_MAX_CHUNKSIZE * 2];
+};
+
+struct wc_usb_desc {
+	char *name;
+	int flags;
+};
+
+#define FLAG_FLIP_RELAYS	(1 << 0)
+
+static struct wc_usb_desc wcusb = { "Wildcard S100U USB FXS Interface" };
+static struct wc_usb_desc wcusb2 = { "Wildcard S110U USB FXS Interface", FLAG_FLIP_RELAYS };
+
+static struct wc_usb_pvt *ifaces[WC_MAX_IFACES];
+
+static int Wcusb_WriteWcRegs(struct usb_device *dev, unsigned char index, 
+					  unsigned char *data, int len)
+{
+	unsigned int pipe = usb_sndctrlpipe(dev, 0);
+	int requesttype;
+	int res;
+
+	requesttype = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+
+	res = usb_control_msg(dev, pipe, REQUEST_NORMAL, requesttype, 
+							0, index, data, len, CONTROL_TIMEOUT_JIFFIES);
+	if (res == -ETIMEDOUT) {
+		printk("wcusb: timeout on vendor write\n");
+		return -1;
+	} else if (res < 0) {
+		printk("wcusb: Error executing control: status=%d\n", le32_to_cpu(res));
+		return -1;
+	}
+	return 0;
+}					  
+
+static int Wcusb_ReadWcRegs(struct usb_device *dev, unsigned char index, 
+					  unsigned char *data, int len)
+{
+	unsigned int pipe = usb_rcvctrlpipe(dev, 0);
+	int requesttype;
+	int res;
+
+	requesttype = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+
+	res = usb_control_msg(dev, pipe, REQUEST_NORMAL, requesttype, 
+							0, index, data, len, CONTROL_TIMEOUT_JIFFIES);
+	if (res == -ETIMEDOUT) {
+		printk("wcusb: timeout on vendor write\n");
+		return -1;
+	} else if (res < 0) {
+		printk("wcusb: Error executing control: status=%d\n", le32_to_cpu(res));
+		return -1;
+	} else {
+		DPRINTK(("wcusb: Executed read, result = %d (data = %04x)\n", le32_to_cpu(res), (int) *data));
+	}
+	return 0;
+}					  
+
+static int wcusb_async_read(struct wc_usb_pvt *p, unsigned char index, unsigned char *data, int len, int state);
+static int wcusb_async_write(struct wc_usb_pvt *p, unsigned char index, unsigned char *data, int len, int state);
+
+static void proslic_read_direct_async(struct wc_usb_pvt *p, unsigned char address)
+{
+	p->wcregindex = address;
+	p->wcregbuf[0] = address | 0x80;
+	p->wcregbuf[1] = 0;
+	p->wcregbuf[2] = 0;
+	p->wcregbuf[3] = 0x67;
+	wcusb_async_write(p, WCUSB_SPORT0, p->wcregbuf, 4, STATE_WCREAD_WRITEREG);
+}
+
+static void proslic_write_direct_async(struct wc_usb_pvt *p, unsigned char address, unsigned char val)
+{
+	p->wcregindex = address;
+	p->wcregbuf[0] = address & 0x7f;
+	p->wcregbuf[1] = val;
+	p->wcregbuf[2] = 0;
+	p->wcregbuf[3] = 0x27;
+	wcusb_async_write(p, WCUSB_SPORT0, p->wcregbuf, 4, STATE_WCWRITE_WRITERES);
+}
+
+static void wcusb_async_control(urb_t *urb)
+{
+	struct wc_usb_pvt *p = urb->context;
+	p->urbcount--;
+	if (urb->status) {
+		printk("Error in transfer...\n");
+		return;
+	}
+	if (!(p->flags & FLAG_RUNNING)) {
+		return;
+	}
+	switch (p->controlstate) {
+	case STATE_WCREAD_WRITEREG:
+		/* We've written the register to sport0, now read form sport 1 */
+		wcusb_async_read(p, WCUSB_SPORT1, &p->wcregval, 1, STATE_WCREAD_READRES);
+		return;
+	case STATE_WCREAD_READRES:
+		switch(p->wcregindex) {
+		case 68:
+			if (!p->hookstate && (p->wcregval & 1)) {
+				p->hookstate = 1;
+				if (debug)
+					printk("Going off hook...\n");
+				zt_hooksig(&p->chan, ZT_RXSIG_OFFHOOK);
+			} else if (p->hookstate && !(p->wcregval & 1)) {
+				p->hookstate = 0;
+				if (debug)
+					printk("Going on hook...\n");
+				zt_hooksig(&p->chan, ZT_RXSIG_ONHOOK);
+			}
+			/* Set outgoing hook state if necessary */
+			if (p->txhook != p->newtxhook) {
+				if (debug)
+					printk("Really setting hook state to %d\n", p->newtxhook);
+				p->txhook = p->newtxhook;
+				proslic_write_direct_async(p, 64, p->newtxhook);
+			} else
+				p->timer = 50;
+			break;
+		case 64:
+			if (debug)
+				printk("Read hook state as %02x\n", p->wcregval);
+			p->timer = 50;
+			break;
+		default:
+			printk("dunno what to do with read/regindex %d\n", p->wcregindex);
+			p->wcregindex = 0;
+		}
+		return;
+	case STATE_WCWRITE_WRITERES:
+		switch(p->wcregindex) {
+		case 64:
+			if (debug) {
+				printk("Hook transition complete to %d\n", ((char *)(urb->transfer_buffer))[1]);
+#ifdef BOOST_RINGER
+			}
+			if (p->txhook == 4) {
+				/* Ringing -- boost battery to 96V */
+				proslic_write_direct_async(p, 74, 0x3f);
+			} else {
+				/* Leave battery at default 75V */
+				proslic_write_direct_async(p, 74, 0x32);
+			}
+			break;
+		case 74:
+			if (debug) {
+				printk("Battery set to -%dV\n", ((char *)(urb->transfer_buffer))[1] * 3 / 2);
+#endif
+				proslic_read_direct_async(p, 64);
+			} else
+				p->timer = 50;
+			break;
+		default:
+			printk("dunno what to do with write/regindex %d\n", p->wcregindex);
+			p->wcregindex = 0;
+		}
+		return;
+	default:
+		printk("async control in unknown state %d\n", p->controlstate);
+	}
+}
+
+static void wcusb_check_interrupt(struct wc_usb_pvt *p)
+{
+	/* Start checking for interrupts */
+	proslic_read_direct_async(p, 68);
+}
+
+static int wcusb_async_read(struct wc_usb_pvt *p, unsigned char index, unsigned char *data, int len, int state)
+{
+	urb_t *urb = &p->control;
+	__u16 size = len;
+	__u16 ind = index;
+
+	memset(urb, 0, sizeof(p->control));
+
+	p->dr.requesttype = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+	p->dr.request = REQUEST_NORMAL;
+	p->dr.value = 0;
+	p->dr.index = cpu_to_le16(ind);
+	p->dr.length = cpu_to_le16(size);
+
+	FILL_CONTROL_URB(urb, p->dev, usb_rcvctrlpipe(p->dev, 0), (unsigned char *)&p->dr, data, len, wcusb_async_control, p);
+	if (usb_submit_urb(urb)) {
+		printk("wcusb_async_read: control URB died\n");
+		return -1;
+	}
+	p->controlstate = state;
+	p->urbcount++;
+	return 0;
+}
+
+static int wcusb_async_write(struct wc_usb_pvt *p, unsigned char index, unsigned char *data, int len, int state)
+{
+	urb_t *urb = &p->control;
+	__u16 size = len;
+	__u16 ind = index;
+
+	memset(urb, 0, sizeof(p->control));
+	
+	p->dr.requesttype = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+	p->dr.request = REQUEST_NORMAL;
+	p->dr.value = 0;
+	p->dr.index = cpu_to_le16(ind);
+	p->dr.length = cpu_to_le16(size);
+
+	FILL_CONTROL_URB(urb, p->dev, usb_sndctrlpipe(p->dev, 0), (unsigned char *)&p->dr, data, len, wcusb_async_control, p);
+	if (usb_submit_urb(urb)) {
+		printk("wcusb_async_write: control URB died\n");
+		return -1;
+	}
+	p->controlstate = state;
+	p->urbcount++;
+	return 0;
+}
+
+/*
+**	Write register to Wc560
+*/
+static int wcoutp(struct usb_device *dev, unsigned char address, unsigned char data)
+{
+	if (!Wcusb_WriteWcRegs(dev, address, &data, 1))
+		return 0;
+
+	return -1;
+}
+
+/*
+**	read register from Wc560
+*/
+static int wcinp(struct usb_device *dev, unsigned char address, unsigned char* data )
+{
+	if (!Wcusb_ReadWcRegs(dev, address, data, 1))
+		return 0;
+
+	return -1;
+}
+
+static int waitForProSlicIndirectRegAccess(struct usb_device *dev)
+{
+    unsigned char count, data;
+    count = 0;
+    while (count++ < 3)
+	 {
+		data = 0;
+		readProSlicDirectReg(dev, I_STATUS, &data);
+
+		if (!data)
+			return 0;
+
+	 }
+
+    if(count > 2) printk(" ##### Loop error #####\n");
+
+	return -1;
+}
+
+static int writeProSlicInDirectReg(struct usb_device *dev, unsigned char address, unsigned short data)
+{
+	
+   if(!waitForProSlicIndirectRegAccess(dev))
+	{
+		if (!writeProSlicDirectReg(dev, IDA_LO,(unsigned char)(data & 0xFF)))
+		{
+			if(!writeProSlicDirectReg(dev, IDA_HI,(unsigned char)((data & 0xFF00)>>8)))
+			{
+				if(!writeProSlicDirectReg(dev, IAA,address))
+					return 0;
+			}
+		}
+	}
+
+	return -1;
+}
+
+/*
+**	Read register from ProSlic
+*/
+int readProSlicDirectReg(struct usb_device *dev, unsigned char address, unsigned char* dataRead)
+{
+	unsigned char data[4];
+
+	data[0] = address | 0x80;
+	data[1] = 0;
+	data[2] = 0;
+	data[3] = 0x67;
+
+	// write to WC register 0x26
+	Wcusb_WriteWcRegs(dev, WCUSB_SPORT0, data, 4);
+	Wcusb_ReadWcRegs(dev, WCUSB_SPORT1, data, 1);
+	*dataRead = data[0];
+
+	return 0;
+}
+
+/*
+**	Write register to ProSlic
+*/
+int writeProSlicDirectReg(struct usb_device *dev, unsigned char address, unsigned char RegValue)
+{
+	unsigned char data[4];
+
+	data[0] = address & 0x7f;
+	data[1] = RegValue;
+	data[2] = 0;
+	data[3] = 0x27;
+
+	// write to WC register 0x26
+	return Wcusb_WriteWcRegs(dev, WCUSB_SPORT0, data, 4);
+}
+
+static int readProSlicInDirectReg(struct usb_device *dev, unsigned char address, unsigned short *data)
+{ 
+    if (!waitForProSlicIndirectRegAccess(dev))
+	 {
+		if (!writeProSlicDirectReg(dev,IAA,address))
+		{
+			if(!waitForProSlicIndirectRegAccess(dev))
+			{
+				unsigned char data1, data2;
+
+				if (!readProSlicDirectReg(dev,IDA_LO, &data1) && !readProSlicDirectReg (dev, IDA_HI, &data2))
+				{
+					*data = data1 | (data2 << 8);
+					return 0;
+				} else 
+					printk("Failed to read direct reg\n");
+			} else
+				printk("Failed to wait inside\n");
+		} else
+			printk("failed write direct IAA\n");
+	 } else
+	 	printk("failed to wait\n");
+
+    return -1;
+}
+
+static int initializeIndirectRegisters(struct usb_device *dev)
+{
+	unsigned char i;
+
+	for (i=0; i<43; i++)
+	{
+		if(writeProSlicInDirectReg(dev, i,indirect_regs[i].initial))
+			return -1;
+	}
+
+	return 0;
+}
+
+static int verifyIndirectRegisters(struct usb_device *dev)
+{ 
+	int passed = 1;
+	unsigned short i,j, initial;
+
+	for (i=0; i<43; i++) 
+	{
+		if(readProSlicInDirectReg(dev, (unsigned char) i, &j)) {
+			printk("Failed to read indirect register %d\n", i);
+			return -1;
+		}
+		initial= indirect_regs[i].initial;
+
+		if ( j != initial )
+		{
+			 printk("!!!!!!! %s  iREG %X = %X  should be %X\n",
+				indirect_regs[i].name,i,j,initial );
+			 passed = 0;
+		}	
+	}
+
+    if (passed) {
+		if (debug)
+			printk("Init Indirect Registers completed successfully.\n");
+    } else {
+		printk(" !!!!! Init Indirect Registers UNSUCCESSFULLY.\n");
+    }
+
+	return 0;
+}
+
+static int calibrateAndActivateProSlic(struct usb_device *dev)
+{ 
+	unsigned char x;
+
+	if(writeProSlicDirectReg(dev, 92, 0xc8))
+		 return -1;
+
+	if(writeProSlicDirectReg(dev, 97, 0))
+		 return -1;
+
+	if(writeProSlicDirectReg(dev, 93, 0x19))
+		 return -1;
+
+	if(writeProSlicDirectReg(dev, 14, 0))
+		 return -1;
+
+	if(writeProSlicDirectReg(dev, 93, 0x99))
+		 return -1;
+
+	if(!readProSlicDirectReg (dev, 93, &x))
+	{
+		if (debug)
+			printk("DC Cal x=%x\n",x);
+
+		if (!writeProSlicDirectReg(dev, 97, 0))
+		{
+		   if(!writeProSlicDirectReg(dev, CALIBR1, CALIBRATE_LINE))
+			{
+				unsigned char data;
+
+				 if(!readProSlicDirectReg(dev, CALIBR1, &data))
+						 return writeProSlicDirectReg(dev, LINE_STATE,ACTIVATE_LINE);
+			}
+		}
+	}
+
+	return -1;
+}
+
+static int InitProSlic(struct usb_device *dev)
+{
+    if (writeProSlicDirectReg(dev, 67, 0x0e)) 
+		/* Disable Auto Power Alarm Detect and other "features" */
+		 return -1;
+    if (initializeIndirectRegisters(dev)) {
+		printk(KERN_INFO "Indirect Registers failed to initialize.\n");
+		 return -1;
+	}
+    if (verifyIndirectRegisters(dev)) {
+		printk(KERN_INFO "Indirect Registers failed verification.\n");
+		 return -1;
+	}
+    if (calibrateAndActivateProSlic(dev)) {
+		printk(KERN_INFO "ProSlic Died on Activation.\n");
+		 return -1;
+	}
+    if (writeProSlicInDirectReg(dev, 97, 0x0)) { // Stanley: for the bad recording fix
+		 printk(KERN_INFO "ProSlic IndirectReg Died.\n");
+		 return -1;
+	}
+    if (writeProSlicDirectReg(dev, 1, 0x2a)) { // U-Law GCI 8-bit interface
+		 printk(KERN_INFO "ProSlic DirectReg Died.\n");
+		 return -1;
+	}
+    if (writeProSlicDirectReg(dev, 2, 0))    // Tx Start count low byte  0
+		 return -1;
+    if (writeProSlicDirectReg(dev, 3, 0))    // Tx Start count high byte 0
+		 return -1;
+    if (writeProSlicDirectReg(dev, 4, 0))    // Rx Start count low byte  0
+		 return -1;
+    if (writeProSlicDirectReg(dev, 5, 0))    // Rx Start count high byte 0
+		 return -1;
+    if (writeProSlicDirectReg(dev, 8, 0x0))    // disable loopback
+		 return -1;
+    if (writeProSlicDirectReg(dev, 18, 0xff))     // clear all interrupt
+		 return -1;
+    if (writeProSlicDirectReg(dev, 19, 0xff)) 
+		 return -1;
+    if (writeProSlicDirectReg(dev, 20, 0xff)) 
+		 return -1;
+    if (writeProSlicDirectReg(dev, 21, 0x00)) 	// enable interrupt
+		 return -1;
+    if (writeProSlicDirectReg(dev, 22, 0x02)) 	// Loop detection interrupt
+		 return -1;
+    if (writeProSlicDirectReg(dev, 23, 0x01)) 	// DTMF detection interrupt
+		 return -1;
+    if (writeProSlicDirectReg(dev, 72, 0x20))
+	    	return -1;
+#ifdef BOOST_RINGER
+	/* Beef up Ringing voltage to 89V */
+	if (writeProSlicInDirectReg(dev, 23, 0x1d1))
+			return -1;
+#endif
+	return 0;
+}
+
+static int InitHardware(struct usb_device *dev)
+{
+
+    if (wcoutp(dev, 0x12, 0x00))	// AUX6 as output, set to low
+      return -1;
+
+    if (wcoutp(dev, 0x13, 0x40))	// AUX6 is output
+      return -1;
+
+    if (wcoutp(dev, 0, 0x50))	// extrst, AUX2 is suspend
+      return -1;
+
+    if (wcoutp(dev, 0x29, 0x20))	// enable SerialUP AUX pin definition
+      return -1;
+
+    if(wcoutp(dev, 0, 0x51))	// no extrst, AUX2 is suspend
+      return -1;
+	/* Make sure there is no gain */
+    if (wcoutp(dev, 0x22, 0x00))
+	return -1;
+    if (wcoutp(dev, 0x23, 0xf2))
+        return -1;
+    if (wcoutp(dev, 0x24, 0x00))
+	return -1;
+    if (wcoutp(dev, 0x25, 0xc9))
+	return -1;
+    // Now initial Proslic
+    if(InitProSlic(dev)) {
+ 	  printk("Failed to initialize proslic\n");
+      return -1;
+	}
+
+	if (debug)
+		printk("Setting up correct altsettings\n");
+
+	/* Setup correct settings (8000 Hz, signed linear) */
+	if (usb_set_interface(dev, 2, 1)) 
+		printk("Unable to setup USB interface 2 to altsetting 1\n");
+	if (usb_set_interface(dev, 3, 1))
+		printk("Unable to setup USB interface 3 to altsetting 1\n");
+
+    DPRINTK("<<< Exit InitHardware\n");
+    return 0; 
+}
+
+static struct usb_device_id wc_dev_ids[] = {
+	  /* This needs to be a USB audio device, and it needs to be made by us and have the right device ID */
+	{ match_flags: (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS | USB_DEVICE_ID_MATCH_DEVICE),
+	  bInterfaceClass: USB_CLASS_AUDIO,
+	  bInterfaceSubClass: 1,
+	  idVendor: 0x06e6,			
+	  idProduct: 0x831c,		/* Product ID / Chip configuration (you can't change this) */
+	  driver_info: (unsigned long)&wcusb,
+	},
+	{ match_flags: (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS | USB_DEVICE_ID_MATCH_DEVICE),
+	  bInterfaceClass: USB_CLASS_AUDIO,
+	  bInterfaceSubClass: 1,
+	  idVendor: 0x06e6,			/*  */
+	  idProduct: 0x831e,		/* Product ID / Chip configuration (you can't change this) */
+	  driver_info: (unsigned long)&wcusb2,
+	},
+	{ }	/* Terminating Entry */
+};
+
+
+
+static void wcusb_read_complete(struct urb *q)
+{
+	struct wc_usb_pvt *p = q->context;
+	short *chunk = q->transfer_buffer;
+	int x;
+
+	if (!p->flags & FLAG_RUNNING) {
+		/* Stop sending URBs since we're not running anymore */
+		p->urbcount--;
+		return;
+	}
+
+	for (x = 0; x < ZT_CHUNKSIZE; x++) {
+		p->chan.readchunk[x] = zt_lin2mu[chunk[x] + 32768];
+	}
+
+	zt_receive(&p->span);
+
+	q->dev = p->dev;
+	
+	if (usb_submit_urb(q)) {
+		printk("wcusb: Read cycle failed\n");
+	}
+
+	if (p->timer && !--p->timer)
+		wcusb_check_interrupt(p);
+
+#ifdef PROSLIC_POWERSAVE
+	if (p->lowpowertimer && !--p->lowpowertimer) {
+		/* Switch back into low power mode */
+		p->idletxhookstate = 1;
+		if (p->txhook == 2)
+			p->newtxhook = p->idletxhookstate;
+	}
+#endif	
+	return;
+}
+
+static void wcusb_write_complete(struct urb *q)
+{
+	struct wc_usb_pvt *p = q->context;
+	short *chunk = q->transfer_buffer;
+	int x;
+
+	if (!p->flags & FLAG_RUNNING) {
+		/* Stop sending URBs since we're not running anymore */
+		p->urbcount--;
+		return;
+	}
+
+	zt_transmit(&p->span);
+	for (x = 0; x < ZT_CHUNKSIZE; x++) {
+		chunk[x] = zt_mulaw[p->chan.writechunk[x]];
+	}
+	q->dev = p->dev;
+	
+	if (usb_submit_urb(q)) {
+		printk("wcusb: Write cycle failed\n");
+	}
+
+	return;
+}
+
+static int StopTransmit(struct wc_usb_pvt *p)
+{
+	p->flags &= ~FLAG_RUNNING;
+	while(p->urbcount) {
+		schedule_timeout(1);
+	}
+	return 0;
+}
+
+static int flip_relays(struct wc_usb_pvt *p, int onoff)
+{
+    unsigned char ctl;
+    unsigned char data;
+    /* Read data */
+    if (wcinp(p->dev, 0x12, &data))
+	return -1;
+    /* Read control */
+    if (wcinp(p->dev, 0x13, &ctl))
+	return -1;
+    /* Setup values properly -- Pins AUX3 & AUX4 control the relays */
+    ctl |= 0x18;
+    if (onoff) {
+	data |= 0x18;
+    } else {
+	data &= 0xe7;
+    }
+    if (wcoutp(p->dev, 0x12, data))
+	return -1;
+    if (wcoutp(p->dev, 0x13, ctl))
+	return -1;
+    return 0;
+}
+
+static int InitPrivate(struct wc_usb_pvt *p)
+{
+	int x;
+	/* Endpoint 6 is the wave-in device */
+	p->readpipe = usb_rcvisocpipe(p->dev, 0x06);
+
+	/* Endpoint 7 is the wave-out device */
+	p->writepipe = usb_sndisocpipe(p->dev, 0x07);
+
+
+	for (x=0;x<2;x++) {
+		p->dataread[x].urb.dev = p->dev;
+		p->dataread[x].urb.pipe = p->readpipe;
+		p->dataread[x].urb.transfer_flags = USB_ISO_ASAP;
+		p->dataread[x].urb.number_of_packets = 1;
+		p->dataread[x].urb.context = p;
+		p->dataread[x].urb.complete = wcusb_read_complete;
+		p->dataread[x].urb.iso_frame_desc[0].length = ZT_CHUNKSIZE * 2;
+		p->dataread[x].urb.iso_frame_desc[0].offset = 0;
+		p->dataread[x].urb.transfer_buffer = p->readchunk + ZT_CHUNKSIZE * x;
+		p->dataread[x].urb.transfer_buffer_length = ZT_CHUNKSIZE * 2;
+
+		p->datawrite[x].urb.dev = p->dev;
+		p->datawrite[x].urb.pipe = p->writepipe;
+		p->datawrite[x].urb.transfer_flags = USB_ISO_ASAP;
+		p->datawrite[x].urb.number_of_packets = 1;
+		p->datawrite[x].urb.context = p;
+		p->datawrite[x].urb.complete = wcusb_write_complete;
+		p->datawrite[x].urb.iso_frame_desc[0].length = ZT_CHUNKSIZE * 2;
+		p->datawrite[x].urb.iso_frame_desc[0].offset = 0;
+		p->datawrite[x].urb.transfer_buffer = p->writechunk + ZT_CHUNKSIZE * x;
+		p->datawrite[x].urb.transfer_buffer_length = ZT_CHUNKSIZE * 2;
+	
+	}
+
+
+	return 0;
+}
+
+static int InitTransfer(struct wc_usb_pvt *p)
+{
+
+	int x;
+	p->urbcount = 4;
+	p->flags |= FLAG_RUNNING;
+
+	for (x=0;x<2;x++) {
+		if (usb_submit_urb(&p->dataread[x].urb)) {
+			printk(KERN_ERR "wcusb: Read submit failed\n");
+			return -1;
+		}
+		if (usb_submit_urb(&p->datawrite[x].urb)) {
+			printk(KERN_ERR "wcusb: Write submit failed\n");
+			return -1;
+		}
+	}
+	/* Start checking for interrupts */
+	wcusb_check_interrupt(p);
+	return 0;
+}
+
+static int wc_usb_hooksig(struct zt_chan *chan, zt_txsig_t txsig)
+{
+	struct wc_usb_pvt *p = chan->pvt;
+#ifdef PROSLIC_POWERSAVE
+	if (p->txhook == 4) {
+		/* Switching out of ring...  Be sure we idle at 2, not 1 at least
+		    for a bit so we can transmit caller*ID */
+		p->idletxhookstate = 2;
+		p->lowpowertimer = POWERSAVE_TIME;
+	}
+#endif
+
+	p->txhook = -1;
+	switch(txsig) {
+	case ZT_TXSIG_ONHOOK:
+		switch(chan->sig) {
+		case ZT_SIG_FXOKS:
+		case ZT_SIG_FXOLS:
+			p->newtxhook = p->idletxhookstate;
+			break;
+		case ZT_SIG_FXOGS:
+			p->newtxhook = 3;
+			break;
+		}
+		break;
+	case ZT_TXSIG_OFFHOOK:
+		p->newtxhook = p->idletxhookstate;
+		break;
+	case ZT_TXSIG_START:
+		p->newtxhook = 4;
+		break;
+	case ZT_TXSIG_KEWL:
+		p->newtxhook = 0;
+		break;
+	}
+	return 0;
+}
+
+static int wc_usb_open(struct zt_chan *chan)
+{
+	struct wc_usb_pvt *p = chan->pvt;
+	if (p->dead)
+		return -1;
+	MOD_INC_USE_COUNT;
+	p->usecount++;
+	return 0;
+}
+
+static int wc_usb_close(struct zt_chan *chan)
+{
+	struct wc_usb_pvt *p = chan->pvt;
+	p->usecount--;
+	if (!p->usecount && p->dead) {
+		/* Someone unplugged us while we were running, so now
+		   that the program exited, we can release our resources */
+		zt_unregister(&p->span);
+		ifaces[p->pos] = NULL;
+		kfree(p);
+	}
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static void *wc_usb_probe(struct usb_device *dev, unsigned int ifnum, const struct usb_device_id *id)
+{
+	struct usb_config_descriptor *config = dev->actconfig;
+	struct wc_usb_pvt *p=NULL;
+	struct wc_usb_desc *d = (struct wc_usb_desc *)id->driver_info;
+	
+	int x;
+	for (x=0;x<WC_MAX_IFACES;x++)
+		if (!ifaces[x]) break;
+	if (x >= WC_MAX_IFACES) {
+		printk("Too many interfaces\n");
+		goto fail;
+	}
+
+	p = kmalloc(sizeof(struct wc_usb_pvt), GFP_KERNEL);
+
+	if (!p)
+		goto fail;
+
+	memset(p, 0, sizeof(struct wc_usb_pvt));
+	p->hardwareflags = d->flags;
+	sprintf(p->span.name, "WCUSB/%d", x);
+	sprintf(p->span.desc,"%s %d", d->name, x);
+	sprintf(p->chan.name, "WCUSB/%d/%d", x, 0);
+#if 0	/* Make them choose with zaptel.conf */
+	p->chan.sig = ZT_SIG_FXOKS;					/* Assume FXOKS signalling for starters */
+#endif
+	p->chan.sigcap = ZT_SIG_FXOKS | ZT_SIG_FXOLS | ZT_SIG_FXOGS;	/* We're capabable of both FXOKS and FXOLS */
+	p->chan.chanpos = 1;
+	p->span.chans = &p->chan;
+	p->span.channels = 1;
+	p->span.hooksig = wc_usb_hooksig;
+	p->span.open = wc_usb_open;
+	p->span.close = wc_usb_close;
+	p->dev = dev;
+	p->pos = x;
+	p->span.flags = ZT_FLAG_RBS;
+	init_waitqueue_head(&p->span.maintq);
+	p->span.pvt = p;
+	p->chan.pvt = p;
+#ifdef PROSLIC_POWERSAVE
+	/* By default we can't send on hook */
+	p->idletxhookstate = 1;
+#else
+	/* By default we can always send on hook */
+	p->idletxhookstate = 2;	
+#endif	
+	ifaces[x] = p;
+
+
+	
+	if (usb_set_configuration(dev, dev->config[0].bConfigurationValue) < 0) {
+		printk(KERN_ERR "wcusb: set_configuration failed (ConfigValue 0x%x)\n", config->bConfigurationValue);
+		goto fail;
+	}
+	if (InitHardware(dev)) {
+		printk(KERN_ERR "wcusb: Hardware initialization failed\n");
+		goto fail;
+	}
+
+	if (InitPrivate(p)) {
+		printk(KERN_ERR "wcusb: Unable to initialize private data structure\n");
+		goto fail;
+	}
+	if (p->hardwareflags & FLAG_FLIP_RELAYS) {
+		flip_relays(p, 1);
+	}
+#if 1 
+	if (zt_register(&p->span, 0)) {
+		printk("Unable to register span %s\n", p->span.name);
+		goto fail;
+	}
+#endif
+
+	if (InitTransfer(p)) {
+		printk(KERN_ERR "wcusb: Unable to begin data flow\n");
+		goto fail;
+	}
+	printk("wcusb: Found a %s\n", d->name);
+	
+	return p;
+fail:
+	if (x < WC_MAX_IFACES)
+		ifaces[x] = NULL;
+	if (p)
+		kfree(p);
+	return NULL;
+}
+
+static void wc_usb_disconnect(struct usb_device *dev, void *ptr)
+{
+	/* Doesn't handle removal if we're in use right */
+	struct wc_usb_pvt *p = ptr;
+	if (ptr) {
+		StopTransmit(p);
+		if (!p->usecount) {
+			zt_unregister(&p->span);
+			ifaces[p->pos] = NULL;
+			kfree(ptr);
+		} else 
+			p->dead = 1;
+	}
+	printk("wcusb: Removed a Wildcard device\n");
+	return;
+}
+
+static struct usb_driver wc_usb_driver =
+{
+	name: "wcusb",
+	probe: wc_usb_probe,
+	disconnect: wc_usb_disconnect,
+	fops: NULL,
+	minor: 0,
+	id_table: wc_dev_ids,
+};
+
+static int __init wc_init (void) 
+{
+	int res;
+	res = usb_register(&wc_usb_driver);
+	if (res)
+		return res;
+	printk("Wildcard USB FXS Interface driver registered\n");
+	return 0;
+}	  
+
+static void __exit wc_cleanup(void)
+{
+	usb_deregister(&wc_usb_driver);
+}
+
+MODULE_AUTHOR("Mark Spencer <markster@linux-support.net>");
+MODULE_DESCRIPTION("Wildcard USB FXS Interface driver");
+MODULE_PARM(debug, "i");
+
+MODULE_DEVICE_TABLE(usb, wc_dev_ids);
+
+module_init(wc_init);
+module_exit(wc_cleanup);
+